File:The Iron Pillar, Qutab Complex.jpg
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English: The iron pillar of Delhi is 23 feet 8 inches high (7.2 metres) with 16 inches diameter structure, was constructed by a "King Chandra", probably Chandragupta II, and is currently standing in the Qutb complex at Mehrauli in Delhi, India. It is famous for the rust-resistant composition of the metals used in its construction.
The pillar has attracted the attention of archaeologists and materials scientists because of its high resistance to corrosion and has been called a "testimony to the high level of skill achieved by the ancient Indian iron smiths in the extraction and processing of iron". The corrosion resistance results from an even layer of crystalline iron(III) hydrogen phosphate hydrate forming on the high-phosphorus-content iron, which serves to protect it from the effects of the Delhi climate. The pillar weighs over 5,865 kg (13,000 lb) and is thought to have been erected in what is now Udayagiri and reused by one of the Gupta monarchs in approximately 402 CE, though the precise date and location are a matter of dispute. |
| Date | |
| Source | Own work |
| Author | Utkarshchaudhary07 |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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This image was uploaded as part of Wiki Loves Monuments 2019.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 03:34, 10 September 2019 | | 1,080 × 1,920 (181 KB) | Utkarshchaudhary07 (talk | contribs) | User created page with UploadWizard |
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